The BETA200 S Ophthalmoscope has a single disc with 28 single lenses which prevents higher refraction errors. 74 One-dioptre steps on the non-continuous lens wheel avoid extreme diopters (-36D to + 38D). Unique stepless brightness control between 100% and 3% (patent pending) with single-handed operation. No scattering thanks to the countersunk, multi-coated window? For a safe diagnosis. Precise operation of the instrument with one hand. The ergonomic design provides flexibility in the examination. Can be used for both wide and non-dilated pupils. The ergonomic shape adapts comfortably to the orbit and shields the ambient light.